Commit 48b3572f authored by Paul Sokolovsky's avatar Paul Sokolovsky
Browse files

Add framework to support alternative implementations of long int Python type.

parent 80f60e1a
......@@ -62,6 +62,18 @@
#define MICROPY_ENABLE_LEXER_UNIX (0)
#endif
// Long int implementation
#define MICROPY_LONGINT_IMPL_NONE (0)
#define MICROPY_LONGINT_IMPL_LONGLONG (1)
#ifndef MICROPY_LONGINT_IMPL
#define MICROPY_LONGINT_IMPL (MICROPY_LONGINT_IMPL_NONE)
#endif
#if MICROPY_LONGINT_IMPL == MICROPY_LONGINT_IMPL_LONGLONG
typedef long long mp_longint_impl_t;
#endif
// Whether to support float and complex types
#ifndef MICROPY_ENABLE_FLOAT
#define MICROPY_ENABLE_FLOAT (0)
......
......@@ -198,6 +198,8 @@ mp_obj_t mp_obj_new_none(void);
mp_obj_t mp_obj_new_bool(bool value);
mp_obj_t mp_obj_new_cell(mp_obj_t obj);
mp_obj_t mp_obj_new_int(machine_int_t value);
mp_obj_t mp_obj_new_int_from_uint(machine_uint_t value);
mp_obj_t mp_obj_new_int_from_long_str(const char *s);
mp_obj_t mp_obj_new_str(qstr qstr);
#if MICROPY_ENABLE_FLOAT
mp_obj_t mp_obj_new_float(mp_float_t val);
......
......@@ -11,8 +11,16 @@
typedef struct _mp_obj_int_t {
mp_obj_base_t base;
#if MICROPY_LONGINT_IMPL != MICROPY_LONGINT_IMPL_NONE
mp_longint_impl_t val;
#endif
} mp_obj_int_t;
void int_print(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t self_in);
mp_obj_t int_binary_op(int op, mp_obj_t lhs_in, mp_obj_t rhs_in);
// This dispatcher function is expected to be independent of the implementation
// of long int
static mp_obj_t int_make_new(mp_obj_t type_in, int n_args, const mp_obj_t *args) {
switch (n_args) {
case 0:
......@@ -20,7 +28,7 @@ static mp_obj_t int_make_new(mp_obj_t type_in, int n_args, const mp_obj_t *args)
case 1:
// TODO allow string as arg and parse it
return MP_OBJ_NEW_SMALL_INT(mp_obj_get_int(args[0]));
return mp_obj_new_int(mp_obj_get_int(args[0]));
//case 2:
// TODO, parse with given base
......@@ -33,9 +41,41 @@ static mp_obj_t int_make_new(mp_obj_t type_in, int n_args, const mp_obj_t *args)
const mp_obj_type_t int_type = {
{ &mp_const_type },
"int",
.print = int_print,
.make_new = int_make_new,
.binary_op = int_binary_op,
};
#if MICROPY_LONGINT_IMPL == MICROPY_LONGINT_IMPL_NONE
// This is called only for non-SMALL_INT
void int_print(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t self_in) {
}
// This is called only for non-SMALL_INT
mp_obj_t int_binary_op(int op, mp_obj_t lhs_in, mp_obj_t rhs_in) {
assert(0);
}
// This is called only with strings whose value doesn't fit in SMALL_INT
mp_obj_t mp_obj_new_int_from_long_str(const char *s) {
assert(0);
}
mp_obj_t mp_obj_new_int_from_uint(machine_uint_t value) {
// SMALL_INT accepts only signed numbers, of one bit less size
// then word size, which totals 2 bits less for unsigned numbers.
if ((value & (WORD_MSBIT_HIGH | (WORD_MSBIT_HIGH >> 1))) == 0) {
return MP_OBJ_NEW_SMALL_INT(value);
}
// TODO: Raise exception
assert(0);
}
mp_obj_t mp_obj_new_int(machine_int_t value) {
return MP_OBJ_NEW_SMALL_INT(value);
if (MP_OBJ_FITS_SMALL_INT(value)) {
return MP_OBJ_NEW_SMALL_INT(value);
}
// TODO: Raise exception
assert(0);
}
#endif
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